An assembly device for a guide sleeve and a locking pin on a sliding core

Abstract

The present invention discloses an assembly device for a guide sleeve and a locking pin on a sliding core, comprising a guide sleeve feeding mechanism, a guide sleeve rotating mechanism and a locking pin pressing mechanism, wherein the guide sleeve feeding mechanism and the locking pin pressing mechanism are respectively located on both sides of the bottom surface of the sliding core; the guide sleeve feeding mechanism comprises a mounting seat, a rotating seat rotatably connected to the mounting seat, a first driving component for driving the mounting seat to approach and / or move away from a limiting bracket in a horizontal direction, and a second driving component for driving the mounting seat to move in a vertical direction, wherein the rotating seat is used to place and position the guide sleeve; the guide sleeve rotating mechanism comprises a rotating shaft, a rotating driving component for driving the rotating shaft to rotate, and a third driving component for driving the rotating shaft to move in a vertical direction, wherein the rotating shaft cooperates with the rotating seat; the locking pin pressing mechanism is used to press the locking pin into the first mounting hole of the sliding core. The assembly device of the present invention realizes the automatic assembly of the guide sleeve and the locking pin in a narrow space, can improve production efficiency, and ensure assembly quality.

Description

Technical Field

[0001] The invention belongs to the technical field of automobile seat slide rail assembly, and in particular relates to an assembly device for a guide sleeve and a locking pin on a slide core. Background Art

[0002] The guide sleeve in the car seat slide rail is used to guide the unlocking pin to move up and down during the unlocking process of the slide rail, and the locking pin is used to fix the guide sleeve on the slide core to prevent the guide sleeve from falling during the operation of the slide rail. The existing assembly process of the guide sleeve and the locking pin is: first insert the guide sleeve into the positioning hole of the slide core, then rotate the guide sleeve 30° to embed the slide core, and finally press the locking pin into the positioning hole of the slide core to fix the guide sleeve.

[0003] However, due to product upgrades, the unlocking structure of the slide rail has been updated, and an unlocking pin limit bracket is welded at the bottom of the positioning hole of the updated slide core. The limit bracket will occupy the original assembly space of the guide sleeve, resulting in a small assembly space for the guide sleeve and difficulty in assembly. Currently, the assembly is done manually using manual tools, which takes a long time to assemble a guide sleeve and a locking pin, has low production efficiency, and cannot guarantee assembly quality. Summary of the invention

[0004] In view of this, in order to overcome the defects of the prior art, the purpose of the present invention is to provide an assembly device for a guide sleeve and a locking pin on a sliding core, which can realize automatic assembly of the guide sleeve and the locking pin in a narrow space, thereby improving production efficiency and assembly quality.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A device for assembling a guide sleeve and a locking pin on a sliding core, wherein a first mounting hole for installing the guide sleeve is provided at the bottom of the sliding core, a limiting bracket is fixedly arranged on the bottom surface of the sliding core, the limiting bracket is located below the first mounting hole, and a second mounting hole is provided at the bottom of the limiting bracket; a locking pin is respectively installed at both ends of the guide sleeve; the assembly device comprises a sliding core clamping mechanism, a sliding core positioning mechanism, a guide sleeve feeding mechanism, a guide sleeve rotating mechanism and a locking pin pressing mechanism, the sliding core positioning mechanism comprises a mounting plate, the guide sleeve feeding mechanism and the locking pin pressing mechanism are both arranged on the mounting plate and are respectively located on both sides of the bottom surface of the sliding core, and the guide sleeve rotating mechanism is located below the mounting plate;

[0007] The guide sleeve feeding mechanism comprises a mounting seat, a rotating seat rotatably connected to the mounting seat, a first driving assembly for driving the mounting seat to approach and / or move away from the limiting bracket in the horizontal direction, and a second driving assembly for driving the mounting seat to move up and down in the vertical direction. The rotating seat is used to place and position the guide sleeve, and a through hole is opened inside the rotating seat along its height direction.

[0008] The guide sleeve rotating mechanism includes a rotating shaft, a rotating drive assembly for driving the rotating shaft to rotate, and a third driving assembly for driving the rotating shaft to move up and down in a vertical direction. The rotating shaft passes through the mounting plate along the thickness direction of the mounting plate. The through hole is used for the rotating shaft to pass through and the shape of the through hole is the same as that of the rotating shaft. The rotating drive assembly is used to drive the rotating shaft to rotate, thereby driving the rotating seat and the guide sleeve to rotate.

[0009] The locking pin pressing mechanism includes a pressing head and a fourth driving assembly for driving the pressing head to move up and down in a vertical direction. The pressing head is located below the mounting seat and is used to press the locking pin into the first mounting hole of the sliding core to fix the guide sleeve to the sliding core.

[0010] According to some preferred embodiments of the present invention, the mounting seat includes a first fixed plate and a second fixed plate connected to each other, the second fixed plate is located at one end of the first fixed plate, the second fixed plate is formed by splicing two detachably connected fixed blocks, and the second fixed plate is provided with a first through groove and a second through groove connected to each other in sequence from the top surface to the bottom surface along its thickness direction, the diameter of the first through groove is smaller than the diameter of the second through groove, the height of the first through groove is greater than the height of the second through groove, and the center of the first through groove and the center of the second through groove are located in the same vertical direction.

[0011] According to some preferred embodiments of the present invention, a first limit groove unit and a second limit groove unit are further spaced apart on the inner wall of the second fixed plate, the first limit groove unit includes two symmetrically arranged first limit grooves, the second limit groove unit includes two symmetrically arranged second limit grooves, the two first limit grooves and the two second limit grooves are both centrally symmetrical about the center of the first through groove, the first limit groove and the second limit groove are both connected to the first through groove and are located on the circumference of the first through groove, the first limit groove and the second limit groove protrude outward from the circumference of the first through groove, the height directions of the first limit groove and the second limit groove are both parallel to the height direction of the first through groove, the heights of the first limit groove and the second limit groove are less than the height of the first through groove and the top surfaces of the first limit groove and the second limit groove are flush with the top surface of the first through groove, and the first limit groove and the second limit groove are both arc grooves.

[0012] According to some preferred implementation aspects of the present invention, the rotating seat includes, from top to bottom, a first cylinder, a second cylinder, a third cylinder, a fourth cylinder and a fifth cylinder connected in sequence, the outer diameter of the first cylinder is greater than the outer diameter of the fifth cylinder, the outer diameter of the fifth cylinder is greater than the outer diameter of the second cylinder, the outer diameter of the second cylinder is greater than the outer diameter of the third cylinder, the outer diameter of the second cylinder is equal to the outer diameter of the fourth cylinder, the outer wall of the third cylinder is sleeved with an elastic collar, the thickness of the elastic collar is equal to the height of the third cylinder, and the outer diameter of the elastic collar is equal to the outer diameter of the second cylinder;

[0013] The height of the fifth cylinder is equal to the height of the second through groove, the height of the first through groove is equal to the sum of the heights of the second cylinder, the third cylinder and the fourth cylinder, the inner wall of the first through groove is in contact with the outer wall of the second cylinder, the elastic clamping ring and the fourth cylinder, and the inner wall of the second through groove is in contact with the outer wall of the fifth cylinder.

[0014] According to some preferred embodiments of the present invention, a positioning groove is provided inside the first column and runs through its height direction, the shape of the positioning groove is consistent with the outer contour of the guide sleeve, and the positioning groove is used to accommodate the guide sleeve; the through hole runs through the thickness direction of the second column and the third column, and a guide groove is provided inside the fourth column and the fifth column, and the guide groove runs through the height direction of the fourth column and the fifth column, and the positioning groove, the through hole and the guide groove are connected in sequence; the second column has two first accommodating cavities that are centrally symmetrical about the axis of the through hole formed from its outer wall inward, the length direction of the first accommodating cavity is perpendicular to the height direction of the second column, and the length of the first accommodating cavity is less than the wall thickness of the second column.

[0015] According to some preferred embodiments of the present invention, two second accommodating cavities are commonly provided inside the second cylinder, the third cylinder, the fourth cylinder and the fifth cylinder, which are centrally symmetrical about the axis of the through hole. The second accommodating cavities are arranged one-to-one correspondingly to the two locking pins on the guide sleeve. The second accommodating cavities run through the height directions of the second cylinder, the third cylinder, the fourth cylinder and the fifth cylinder. The two second accommodating cavities are respectively located on both sides of the through hole, and the two second accommodating cavities are connected with the positioning groove and the guide groove; the orthographic projections of the two second accommodating cavities on the horizontal plane are defined as the first projection plane, the orthographic projection of the positioning groove on the horizontal plane is defined as the second projection plane, and the orthographic projection of the guide groove on the horizontal plane is defined as the third projection plane, and the first projection plane is located within the range of the second projection plane; a part of the first projection plane is located within the range of the third projection plane, and the remaining part of the first projection plane is located outside the range of the third projection plane.

[0016] According to some preferred embodiments of the present invention, an elastic member and a ball are provided in each of the first accommodating chambers, the ball abuts against one end of the elastic member, and the other end of the elastic member abuts against one end of the first accommodating chamber, when the elastic member is in a natural state, a part of the ball is located outside the first accommodating chamber, and the first limiting groove and / or the second limiting groove are used to accommodate part of the ball; a ejection pin is provided in each of the second accommodating chambers, the ejection pin comprises a first pin portion and a second pin portion connected to each other, the axis center line of the first pin portion coincides with the axis center line of the second pin portion, the diameter of the first pin portion is smaller than the diameter of the second pin portion, the second pin portion is provided with a notch from its outer wall inwardly, the height of the notch is smaller than the height of the second pin portion, the end of the notch away from the first pin portion is flush with the end of the second pin portion away from the first pin portion; the shape of the notch is arc-shaped, and the depth of the notch is smaller than the diameter of the second pin portion.

[0017] According to some preferred embodiments of the present invention, the second accommodating cavity includes a first cavity portion and a second cavity portion that are connected, the first cavity portion is located above the second cavity portion, the diameter of the first cavity portion is smaller than the diameters of the second cavity portion and the second pin portion, the height of the second accommodating cavity is greater than the length of the second pin portion, the first cavity portion is used to accommodate at least part of the first pin portion, and the outer wall of the first pin portion is in contact with the inner wall of the first cavity portion; the second cavity portion is used to accommodate the second pin portion and part of the first pin portion, and the outer wall of the second pin portion is in contact with the inner wall of the second cavity portion.

[0018] According to some preferred embodiments of the present invention, the first drive component includes a first drive, the second drive component includes a second drive and a first fixed seat, the bottom of the first drive is fixedly connected to the top surface of the mounting plate, the top of the first drive is fixedly connected to one side of the first fixed seat, and the first drive is used to drive the first fixed seat to approach and / or move away from the limiting bracket in the horizontal direction; one end of the telescopic shaft of the second drive is fixedly connected to the first fixed plate, the shell of the second drive is fixedly connected to the other side of the first fixed seat, and the second drive is used to drive the mounting seat to move up and down in the vertical direction.

[0019] According to some preferred embodiments of the present invention, the locking pin pressing mechanism also includes a connecting block, the pressing head includes a pressing portion and a connecting portion connected to each other, one end of the connecting block is fixedly connected to the connecting portion, the pressing portion is located below the second fixing plate, and the outer diameter of the pressing portion is smaller than the diameter of the second mounting hole and the diameter of the guide groove; a first channel is provided inside the pressing head and runs through its height direction, and a second channel is provided inside one end of the connecting block and runs through its height direction, the first channel is connected to the second channel and is used together for the rotation shaft to pass through.

[0020] According to some preferred implementation aspects of the present invention, the guide sleeve has a first state, a second state and a third state. When the guide sleeve is in the first state, the guide sleeve is located in the positioning groove, a part of the two balls is respectively located in one of the first limit grooves, the two locking pins are located below the bottom surface of the sliding core and the ends of the locking pins close to the ejection pins are located in the first cavity, and a side of the elastic retaining ring close to the guide sleeve is in contact with a side of the notch close to the guide sleeve; when the guide sleeve is in the second state, the end of the guide sleeve away from the pressure head is located in the first mounting hole, and the end of the guide sleeve close to the pressure head is located in the In the positioning groove, parts of the two balls are respectively located in one of the first limiting grooves, the two locking pins are located below the bottom surface of the sliding core and the ends of the locking pins close to the ejecting pin are located in the first cavity, and a side of the elastic retaining ring close to the guide sleeve is in contact with a side of the notch close to the guide sleeve; when the guide sleeve is in the third state, the guide sleeve is located in the first mounting hole, parts of the two balls are respectively located in one of the second limiting grooves, the ends of the two locking pins away from the ejecting pin are located in the first mounting hole, and there is a gap between a side of the elastic retaining ring close to the guide sleeve and a side of the notch close to the guide sleeve.

[0021] According to some preferred embodiments of the present invention, the assembly device of the present invention further comprises a first fixed frame and a second fixed frame, the bottom surface of the first fixed frame is fixedly connected to the top surface of the second fixed frame, the sliding core clamping mechanism is fixedly arranged on one side of the first fixed frame, and the guide sleeve rotating mechanism is arranged on one side of the second fixed frame. In addition, the third driving assembly comprises a third fixed plate, a third driver, a second fixed seat, a slider fixedly arranged on one side of the third fixed plate, a slide rail slidably connected to the slider, and a third fixed seat fixedly arranged on one side of the third fixed plate, the slide rail is fixedly connected to one side of the second fixed frame, the second fixed seat is fixedly connected to one side of the second fixed frame, the housing of the third driver is fixedly connected to the top surface of the second fixed seat, the telescopic shaft of the third driver is fixedly connected to the bottom surface of the third fixed seat, and the third driver is used to drive the third fixed seat and the third fixed plate to move up and down in the vertical direction. The rotary drive assembly includes a fourth fixed seat, a rotary driver, a first coupling connected to the rotary shaft of the rotary driver, a torque sensor connected to one end of the first coupling, a second coupling connected to one end of the torque sensor, a sleeve connected to one end of the second coupling, a bearing sleeved on the outer circumference of the sleeve, and a bearing seat rotatably connected to the bearing. One side of the fourth fixed seat is fixedly connected to the bottom of one side of the third fixed plate, the housing of the rotary driver is fixedly connected to the fourth fixed seat, and one side of the bearing seat is also fixedly connected to the top of one side of the third fixed plate. One end of the rotating shaft is fixedly connected to one end of the sleeve, and the sleeve also passes through the mounting plate along the thickness direction of the mounting plate. The rotary driver is used to drive the sleeve to rotate, thereby driving the rotating shaft to rotate so that the rotating seat rotates together, and finally driving the guide sleeve to rotate.

[0022] According to some preferred embodiments of the present invention, the fourth drive assembly includes a fourth driver and a fifth fixed seat, the bottom surface of the fifth fixed seat is fixedly connected to the top surface of the mounting plate, the top surface of the fifth fixed seat is fixedly connected to the housing of the fourth driver, the telescopic shaft of the fourth driver is fixedly connected to an end of the connecting block away from the pressure head, and the fourth driver is used to drive the connecting block to move up and down in the vertical direction so that the pressure head approaches and / or moves away from the second fixed plate.

[0023] According to some preferred embodiments of the present invention, the sliding core clamping mechanism includes a clamping driver and a pressure block, one side of the housing of the clamping driver is fixedly connected to one side of the first fixed frame, the telescopic shaft of the clamping driver is fixedly connected to the pressure block, and the clamping driver is used to drive the pressure block to move up and down in the vertical direction so that the pressure head approaches and / or moves away from the sliding core.

[0024] According to some preferred embodiments of the present invention, the sliding core positioning mechanism also includes support seats fixedly arranged at both ends of the top surface of the mounting plate, and the mounting plate is provided with avoidance holes running through the thickness direction thereof, and the avoidance holes are used for the bushing and the rotating shaft to pass through; the distance between the two support seats is smaller than the length of the sliding core, and a third limiting groove is downwardly provided on the top surface of each support seat, and the third limiting groove is used to clamp with the bottom of the sliding core.

[0025] Compared with the prior art, the present invention is beneficial in that: the guide sleeve and locking pin assembly device on the slide core of the present invention, through the arrangement and mutual cooperation of the guide sleeve feeding mechanism, the guide sleeve rotating mechanism and the locking pin pressing mechanism, can use the mounting seat of the guide sleeve feeding mechanism to enter from the side of the limit bracket to bring the guide sleeve and the locking pin to the bottom of the first mounting hole and press the guide sleeve into the first mounting hole from bottom to top, and after the guide sleeve is driven to rotate a certain angle by the guide sleeve rotating mechanism, the locking pin pressing mechanism can just press the locking pin into the first mounting hole, so that the guide sleeve and the slide core are fixed. The automatic assembly of the guide sleeve and the locking pin in a small space is realized, which can not only effectively improve the production efficiency, but also ensure the assembly quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0027] Figure 1 It is a schematic diagram of the three-dimensional structure of the assembly device of the guide sleeve and the locking pin (the guide sleeve is in the first state) in the preferred embodiment of the present invention;

[0028] Figure 2 It is a schematic diagram of the three-dimensional structure of the assembly device of the guide sleeve and the locking pin in the preferred embodiment of the present invention after some mechanisms are hidden;

[0029] Figure 3 It is a schematic diagram of the three-dimensional structure of the sliding core in the preferred embodiment of the present invention;

[0030] Figure 4 It is a schematic diagram of the three-dimensional structure of the guide sleeve and the locking pin in the preferred embodiment of the present invention;

[0031] Figure 5 This is a schematic diagram of the main structure of the rotating seat in the preferred embodiment of the present invention;

[0032] Figure 6 for Figure 5 Schematic diagram of the cross-sectional structure along the AA direction;

[0033] Figure 7 It is a schematic diagram of the three-dimensional structure of the ejector pin and the elastic collar in the preferred embodiment of the present invention;

[0034] Figure 8 It is a schematic diagram of a three-dimensional structure in which a mounting seat, a rotating seat and a guide sleeve (the guide sleeve is in a first state) cooperate with each other in a preferred embodiment of the present invention;

[0035] Fig. 9 for Figure 8 Schematic diagram of the three-dimensional structure after hiding some of the structures;

[0036] Fig.10 for Figure 8 A schematic diagram of a top view structure;

[0037] Fig.11 for Fig.10 A schematic diagram of the cross-sectional structure along the BB direction;

[0038] Fig.12 for Fig.10 Schematic diagram of the cross-sectional structure along CC direction;

[0039] Fig.13 for Fig.10 A schematic diagram of the cross-sectional structure of the mounting seat along the DD direction;

[0040] Fig.14 It is a schematic diagram of the top view of the structure of the guide sleeve in the second state cooperating with the sliding core and the locking pin in the preferred embodiment of the present invention;

[0041] Fig.15 It is a schematic diagram of the top view of the structure of the guide sleeve in the third state cooperating with the sliding core and the locking pin in the preferred embodiment of the present invention;

[0042] Wherein, the accompanying drawings are marked as follows:

[0043] Guide sleeve feeding mechanism-1, first fixed plate-111, second fixed plate-112, fixed block-K, first through groove-C1, second through groove-C2, first limiting groove-C3, second limiting groove-C4, rotating seat-12, first column-121, positioning groove-C5, second column-122, through hole-C6, first accommodating cavity-C8, first cavity part-C91, second cavity part-C92, third column-123, fourth column-124, guide groove-C7, fifth column-125, elastic clamp-126, elastic member-13, ball-14, first pin part-151, second pin part-152, notch-Q, first driver-16, second driver-17, first fixed seat-18;

[0044] Guide sleeve rotating mechanism-2, rotating shaft-21, third fixing plate-22, third driver-231, rotating driver-232, second fixing seat-241, third fixing seat-242, fourth fixing seat-243, bearing seat-244, slider-251, slide rail-252, first coupling-261, second coupling-262, torque sensor-27, sleeve-28, bearing-29;

[0045] Locking pin press-fitting mechanism-3, press-in portion-311, connecting portion-312, connecting block-32, fourth driver-33, fifth fixing seat-34;

[0046] Sliding core clamping mechanism-4, clamping driver-41, clamping block-42;

[0047] Sliding core positioning mechanism-5, mounting plate-51, avoidance hole-511, support seat-52, sensor-53;

[0048] First fixing frame-6, second fixing frame-7;

[0049] Sliding core-8, first mounting hole-81, limiting bracket-82, guide sleeve-9, bayonet-91, locking pin-10. DETAILED DESCRIPTION

[0050] In order to enable those skilled in the art to better understand the technical solution of the present invention, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0051] The car seat slide rail is composed of a slide core 8 and a slideway (not shown) nested together. The slide core 8 and the slideway move relative to each other to adjust the seat position. A locking tooth plate, a guide sleeve 9, an unlocking pin and a return spring are installed between the slide core 8 and the slideway. The interaction between the various components can realize the locking and unlocking of the slide core 8 and the slideway. Figure 3 As shown, in this embodiment, a first mounting hole 81 for mounting the guide sleeve 9 and the locking pin 10 is provided at the bottom of the slide core 8, and a limit bracket 82 is fixedly provided on the bottom surface of the slide core 8. The limit bracket 82 is located below the first mounting hole 81, and the bottom of the limit bracket 82 has a second mounting hole; a locking pin 10 is installed at each end of a guide sleeve 9, and the locking pin 10 needs to pass through one end of the guide sleeve 9 and the bottom of the slide core 8 at the same time to fix the guide sleeve 9 on the slide core 8, as shown in FIG. Figure 4As shown, since both sides of the upper end of the guide sleeve 9 have a bayonet 91, during assembly, it is necessary to first insert the guide sleeve 9 into the first mounting hole 81 (the lower end of the guide sleeve 9 is located below the bottom surface of the first mounting hole 81), and then rotate the guide sleeve 9 by a certain angle so that the bayonet 91 on the guide sleeve 9 can clamp the first mounting hole 81, and finally the locking pin 10 can be pressed into the first mounting hole 81 to fix the guide sleeve 9 to the sliding core 8.

[0052] This embodiment provides an assembly device for the guide sleeve 9 and the locking pin 10 on the sliding core 8. Figures 1 to 15 As shown, the assembly device of this embodiment includes a sliding core clamping mechanism 4, a sliding core positioning mechanism 5, a guide sleeve feeding mechanism 1, a guide sleeve rotating mechanism 2, a locking pin pressing mechanism 3, a first fixed frame 6 and a second fixed frame 7. The sliding core clamping mechanism 4 is fixedly arranged on one side of the first fixed frame 6, the guide sleeve rotating mechanism 2 is slidably arranged on one side of the second fixed frame 7, and the bottom surface of the first fixed frame 6 is fixedly connected to the top surface of the second fixed frame 7; the sliding core clamping mechanism 4 is located above the sliding core positioning mechanism 5, the sliding core positioning mechanism 5 is located above the guide sleeve rotating mechanism 2, and the guide sleeve feeding mechanism 1 and the locking pin pressing mechanism 3 are respectively located on both sides of the sliding core positioning mechanism 5. The sliding core positioning mechanism 5 is used to place and position the sliding core 8, the sliding core pressing mechanism 4 is used to press the sliding core 8 onto the sliding core positioning mechanism 5, the guide sleeve feeding mechanism 1 is used to press the upper end of the guide sleeve 9 into the first mounting hole 81 from the side of the limiting bracket 82, the locking pin pressing mechanism 3 is used to drive the guide sleeve 9 and the locking pin 10 to rotate in the first mounting hole 81, and the locking pin pressing mechanism 3 is used to press the locking pin 10 into the first mounting hole 81.

[0053] Furthermore, the sliding core positioning mechanism 5 includes a mounting plate 51 and support seats 52 fixedly arranged at both ends of the top surface of the mounting plate 51. The mounting plate 51 is provided with a avoidance hole 511 that runs through the thickness direction thereof; the distance between the two support seats 52 is less than the length of the sliding core 8, and a third limiting groove is downwardly provided on the top surface of each support seat 52 for clamping with the bottom of the sliding core 8. Before assembly, the sliding core 8 is first placed in the third limiting grooves of the two support seats 52, and a sensor 53 is also fixedly arranged on the inner side of one of the two support seats 52. The sensor 53 is used to detect whether the sliding core 8 is placed on the support seat 52. If the sliding core 8 is not placed, an alarm will be sounded to remind the staff.

[0054] The sliding core clamping mechanism 4 includes a clamping driver 41 and a clamping block 42. One side of the shell of the clamping driver 41 is fixedly connected to one side of the first fixed frame 6. The telescopic shaft of the clamping driver 41 is fixedly connected to the clamping block 42. The clamping driver 41 is used to drive the clamping block 42 to move up and down in the vertical direction so that the pressure head approaches and / or moves away from the sliding core 8. Before starting assembly, the clamping block 42 is pressed down to clamp the sliding core 8 on the sliding core positioning mechanism 5 to ensure that the sliding core 8 can remain stable during the assembly process.

[0055] Specifically, Figure 1 and Figure 2 , Figures 8 to 10 As shown, the guide sleeve feeding mechanism 1 includes a mounting seat, a rotating seat 12 rotatably connected to the mounting seat, a first driving assembly for driving the mounting seat to approach and / or move away from the limiting bracket 82 in the horizontal direction, and a second driving assembly for driving the mounting seat to move up and down in the vertical direction. The mounting seat includes a first fixed plate 111 and a second fixed plate 112 connected to each other. The second fixed plate 112 is located at one end of the first fixed plate 111. Due to the narrow space, the second fixed plate 112 is formed by splicing two split and detachably connected fixed blocks K. The second fixed plate 112 is provided with a first through groove C1 and a second through groove C2 in sequence along the thickness direction thereof from the top surface to the bottom surface. The diameter of the first through groove C1 is smaller than the diameter of the second through groove C2, the height of the first through groove C1 is greater than the height of the second through groove C2, and the center of the first through groove C1 and the center of the second through groove C2 are located in the same vertical direction. The inner wall of the second fixing plate 112 is also provided with a first limiting groove unit and a second limiting groove unit at intervals. The first limiting groove unit includes two symmetrically arranged first limiting grooves C3, and the second limiting groove unit includes two symmetrically arranged second limiting grooves C4. The two first limiting grooves C3 and the two second limiting grooves C4 are both centrally symmetrical about the center of the first through groove C1. The first limiting groove C3 and the second limiting groove C4 are both connected to the first through groove C1 and are located on the circumference of the first through groove C1. The first limiting groove C3 and the second limiting groove C4 protrude outward from the circumference of the first through groove C1. The height directions of the first limiting groove C3 and the second limiting groove C4 are both parallel to the height direction of the first through groove C1, and the heights of the first limiting groove C3 and the second limiting groove C4 are less than the height of the first through groove C1; the top surfaces of the first limiting groove C3 and the second limiting groove C4 are both flush with the top surface of the first through groove C1, and the first limiting groove C3 and the second limiting groove C4 are both arc-shaped grooves.

[0056] like Figures 5 to 12As shown, the rotating seat 12 includes, from top to bottom, a first cylinder 121, a second cylinder 122, a third cylinder 123, a fourth cylinder 124 and a fifth cylinder 125 which are connected in sequence. The outer diameter of the first cylinder 121 is greater than the outer diameter of the fifth cylinder 125, the outer diameter of the fifth cylinder 125 is greater than the outer diameter of the second cylinder 122, the outer diameter of the second cylinder 122 is greater than the outer diameter of the third cylinder 123, and the outer diameter of the second cylinder 122 is equal to the outer diameter of the fourth cylinder 124; the outer wall of the third cylinder 123 is sleeved with an elastic clamping ring 126, the thickness of the elastic clamping ring 126 is equal to the height of the third cylinder 123, and the outer diameter of the elastic clamping ring 126 is equal to the outer diameter of the second cylinder 122. The height of the fifth column 125 is equal to the height of the second through groove C2, and the height of the first through groove C1 is equal to the sum of the heights of the second column 122, the third column 123 and the fourth column 124. When the rotating seat 12 is installed into the mounting seat, the inner wall of the first through groove C1 fits with the outer wall of the second column 122, the elastic clamping ring 126 and the fourth column 124, and the inner wall of the second through groove C2 fits with the outer wall of the fifth column 125, ensuring that the rotating seat 12 will only rotate around its center without shifting in other directions.

[0057] The first column 121 has a positioning groove C5 extending in the height direction. The shape of the positioning groove C5 matches the outer contour of the guide sleeve 9 to place and position the guide sleeve 9, ensuring that the guide sleeve 9 is located in the positioning groove C5 and will not shift. The second column 122 and the third column 123 have a through hole C6 extending in the thickness direction of the second column 122 and the third column 123. The fourth column 124 and the fifth column 125 have a guide groove C7 extending in the height direction of the fourth column 124 and the fifth column 125. The positioning groove C5, the through hole C6 and the guide groove C7 are connected in sequence. The second column 122 has two first accommodating cavities C8 extending inward from its outer wall and being symmetrical about the axis of the through hole C6. The length direction of the first accommodating cavity C8 is perpendicular to the height direction of the second column 122 and the length of the first accommodating cavity C8 is less than the wall thickness of the second column 122. Each first accommodating cavity C8 is provided with an elastic member 13 and a ball 14, the ball 14 abuts against one end of the elastic member 13, and the other end of the elastic member 13 abuts against one end of the first accommodating cavity C8. When the elastic member 13 is in a natural state, a part of the ball 14 is located outside the first accommodating cavity C8, and the first limiting groove C3 and / or the second limiting groove C4 are used to accommodate the part of the ball 14 located outside the first accommodating cavity C8. The arrangement of the elastic member 13, the ball 14, and the first limiting groove unit and the second limiting groove unit matched therewith can be used to maintain the position of the rotating seat 12 after rotating a certain angle in the mounting seat, and prevent the rotating seat 12 from being misplaced.

[0058] The second column 122, the third column 123, the fourth column 124 and the fifth column 125 are provided with two second accommodating cavities which are centrally symmetrical about the axis of the through hole C6. The two second accommodating cavities are respectively located on both sides of the through hole C6. The second accommodating cavities are arranged in one-to-one correspondence with the two locking pins 10 on the guide sleeve 9. The second accommodating cavities run through the height direction of the second column 122, the third column 123, the fourth column 124 and the fifth column 125. The two second accommodating cavities are both connected with the positioning groove C5 and the guide groove C7. The orthographic projection of the two second accommodating cavities on the horizontal plane is defined as the first projection plane, the orthographic projection of the positioning groove C5 on the horizontal plane is defined as the second projection plane, and the orthographic projection of the guide groove C7 on the horizontal plane is defined as the third projection plane. The first projection plane is located within the range of the second projection plane; a part of the first projection plane is located within the range of the third projection plane, and the remaining part of the first projection plane is located outside the range of the third projection plane. In addition, the second accommodating cavity includes a first cavity portion C91 and a second cavity portion C92 that are connected, and the first cavity portion C91 is located above the second cavity portion C92.

[0059] Each second accommodating cavity is provided with a push pin for lifting the locking pin 10 upwards, and each push pin includes a first pin portion 151 and a second pin portion 152 connected to each other, the axis of the first pin portion 151 coincides with the axis of the second pin portion 152, and the diameter of the first pin portion 151 is smaller than the diameter of the second pin portion 152. Further, the diameter of the first cavity portion C91 is smaller than the diameter of the second cavity portion C92 and the second pin portion 152, the height of the second accommodating cavity is greater than the length of the second pin portion 152, the first cavity portion C91 is used to accommodate at least part of the first pin portion 151, and the outer wall of the first pin portion 151 is in contact with the inner wall of the first cavity portion C91; the second cavity portion C92 is used to accommodate the second pin portion 152 and part of the first pin portion 151, and the outer wall of the second pin portion 152 is in contact with the inner wall of the second cavity portion C92. When the ejection pin is located in the second accommodating cavity, the bottom surface of the first cavity portion C91 can limit the top surface of the second pin portion 152 to prevent the ejection pin from being pushed upward too much under the action of the locking pin pressing mechanism 3.

[0060] like Figure 7 As shown, the second pin portion 152 of each ejection pin has a notch Q formed inwardly from its outer wall, the height of the notch Q is less than the height of the second pin portion 152, and the end of the notch Q away from the first pin portion 151 is flush with the end of the second pin portion 152 away from the first pin portion 151; the shape of the notch Q is arc-shaped, and the depth of the notch Q is less than the diameter of the second pin portion 152. The provision of the elastic collar 126 combined with the provision of the notch Q of the second pin portion 152 is for fixing the ejection pin, and can also ensure that the rotating seat 12 can still rotate freely after being installed in the mounting seat without being affected by the elastic collar 126 and the ejection pin.

[0061] The first drive assembly includes a first driver 16, and the second drive assembly includes a second driver 17 and a first fixed seat 18. The bottom of the first driver 16 is fixedly connected to the top surface of the mounting plate 51, and the top of the first driver 16 is fixedly connected to one side of the first fixed seat 18. The first driver 16 is used to drive the first fixed seat 18 to approach and / or move away from the limiting bracket 82 in the horizontal direction, so as to drive the rotating seat 12 on the mounting seat and the guide sleeve 9 located in the rotating seat 12 to pass through the side of the limiting bracket 82, so that the guide sleeve 9 is located below the first mounting hole 81, which is convenient for further installation of the guide sleeve 9 and the locking pin 10. One end of the telescopic shaft of the second driver 17 is fixedly connected to the first fixed plate 111, and the shell of the second driver 17 is fixedly connected to the other side of the first fixed seat 18. The second driver 17 is used to drive the mounting seat to move up and down in the vertical direction.

[0062] Furthermore, if Figure 1 and Figure 2 As shown, the guide sleeve rotating mechanism 2 includes a rotating shaft 21, a rotating driving assembly for driving the rotating shaft 21 to rotate, and a third driving assembly for driving the rotating shaft 21 to move up and down in the vertical direction. The third driving assembly includes a third fixed plate 22, a third driver 231, a second fixed seat 241, a slider 251 fixedly arranged on one side of the third fixed plate 22, a slide rail 252 fixedly connected to one side of the second fixed frame 7, and a third fixed seat 242 fixedly arranged on one side of the third fixed plate 22. The slide rail 252 is slidably connected to the slider 251, and the length direction of the slide rail 252 is parallel to the length direction of the third fixed plate 22 and the rotating shaft 21; the second fixed seat 241 is fixedly connected to one side of the second fixed frame 7, the housing of the third driver 231 is fixedly connected to the top surface of the second fixed seat 241, the telescopic shaft of the third driver 231 is fixedly connected to the bottom surface of the third fixed seat 242, and the third driver 231 is used to drive the third fixed seat 242 and the third fixed plate 22 to move up and down in the vertical direction.

[0063] The guide groove C7 and the through hole C6 in the rotating seat 12 are both used for the rotation shaft 21 to pass through, and the shape of the through hole C6 is the same as that of the rotation shaft 21. In this embodiment, the shape of the through hole C6 and the rotation shaft 21 are both hexagonal prisms. When the rotation shaft 21 is inserted into the through hole C6, the outer wall of the rotation shaft 21 fits with the inner wall of the through hole C6, which can ensure that the rotation shaft 21 and the rotating seat 12 are closely matched. Under the action of the rotation drive assembly, the rotation shaft 21 is driven to rotate, and then the rotation seat 12 and the guide sleeve 9 can be driven to rotate. Specifically, the rotation drive assembly includes a fourth fixed seat 243, a rotation driver 232, a first coupling 261 connected to the rotation shaft of the rotation driver 232, a torque sensor 27 connected to one end of the first coupling 261, a second coupling 262 connected to one end of the torque sensor 27, a sleeve 28 connected to one end of the second coupling 262, a bearing 29 sleeved on the outer periphery of the sleeve 28, and a bearing seat 244 rotatably connected to the bearing 29. One side of the fourth fixed seat 243 is fixedly connected to the bottom of the third fixed plate 22 away from the slide rail 252, the housing of the rotary driver 232 is fixedly connected to the fourth fixed seat 243, and one side of the bearing seat 244 is fixedly connected to the top of the third fixed plate 22 away from the slide rail 252. One end of the rotating shaft 21 is fixedly connected to one end of the sleeve 28, and the avoidance hole 511 on the mounting plate 51 is used for the sleeve 28 and the rotating shaft 21 to pass through. The rotary driver 232 is used to drive the sleeve 28 to rotate, and then drive the rotating shaft 21 to rotate so that the rotating seat 12 rotates together, and finally drives the guide sleeve 9 to rotate. In this embodiment, through the setting of the torque sensor 27, it can be used to detect whether the rotation torque of the sleeve 28 and the rotating shaft 21 is qualified, and realize automatic detection of the rotation angle, which is conducive to ensuring assembly quality.

[0064] Furthermore, if Figure 1 and Figure 2As shown, the locking pin pressing mechanism 3 includes a pressing head, a connecting block 32 and a fourth driving assembly. The pressing head includes a pressing portion 311 and a connecting portion 312 connected to each other. One end of the connecting block 32 is fixedly connected to the connecting portion 312, and the pressing portion 311 is located below the second fixed plate 112. The outer diameter of the pressing portion 311 is smaller than the diameter of the second mounting hole and the diameter of the guide groove C7 to ensure that the pressing portion 311 can pass through the second mounting hole at the bottom of the limiting bracket 82, and then enter the bottom of the rotating seat 12 to cooperate with the ejection pin located therein to lift the ejection pin upward. The inside of the pressing head is provided with a first channel running through its height direction, and the inside of the end of the connecting block 32 connected to the pressing head is provided with a second channel running through its height direction. The first channel is connected to the second channel and is used together for the rotation shaft 21 to pass through, so as to ensure that the rotation shaft 21 can be inserted into the through hole C6 of the rotating seat 12. The fourth drive assembly includes a fourth driver 33 and a fifth fixed seat 34. The bottom surface of the fifth fixed seat 34 is fixedly connected to the top surface of the mounting plate 51, and the top surface of the fifth fixed seat 34 is fixedly connected to the shell of the fourth driver 33. The telescopic shaft of the fourth driver 33 is fixedly connected to the end of the connecting block 32 away from the pressing head. The fourth driver 33 is used to drive the connecting block 32 to move up and down in the vertical direction so that the pressing head approaches and / or moves away from the second fixed plate 112. When the pressing head moves upward and enters the guide groove C7, as the fourth driver 33 is continuously driven, the pressing portion 311 will push the ejection pin upward, so that the ejection pin pushes the locking pin 10 upward, and then presses the locking pin 10 into the first mounting hole 81 of the sliding core 8 to fix the guide sleeve 9 to the sliding core 8.

[0065] In this embodiment, the guide sleeve 9 has a first state, a second state and a third state. When the guide sleeve 9 is in the first state, the guide sleeve 9 is located in the positioning groove C5, and a part of the two balls 14 are respectively located in a first limit groove C3, and the two locking pins 10 are both located below the bottom surface of the sliding core 8, and the upper end of the locking pin 10 is inserted into the lower end of the guide sleeve 9, and the lower end of the locking pin 10 close to the ejection pin is located in the first cavity C91, and the side of the elastic retaining ring 126 close to the guide sleeve 9 is in contact with the side of the notch Q close to the guide sleeve 9.

[0066] like Fig.14 As shown, when the guide sleeve 9 is in the second state, the upper end of the guide sleeve 9 is located in the first mounting hole 81, the lower end of the guide sleeve 9 is located in the positioning groove C5, a portion of the two balls 14 are respectively located in a first limit groove C3, the two locking pins 10 are both located below the bottom surface of the sliding core 8, and the upper ends of the locking pins 10 are inserted into the lower end of the guide sleeve 9, the lower end of the locking pin 10 close to the ejection pin is located in the first cavity C91, and the side of the elastic retaining ring 126 close to the guide sleeve 9 is in contact with the side of the notch Q close to the guide sleeve 9.

[0067] like Fig.15As shown, when the guide sleeve 9 is in the third state, the guide sleeve 9 is located in the first mounting hole 81 (the guide sleeve 9 is separated from the rotating seat 12), parts of the two balls 14 are respectively located in a second limiting groove C4, the upper ends of the two locking pins 10 away from the ejection pins are located in the first mounting hole 81, the lower ends of the locking pins 10 are inserted into the lower end of the guide sleeve 9, and there is a gap between the side of the elastic retaining ring 126 close to the guide sleeve 9 and the side of the notch Q close to the guide sleeve 9.

[0068] The following briefly describes the working process of the assembly device of the guide sleeve 9 and the locking pin 10 on the sliding core 8 in this embodiment:

[0069] The operator places the sliding core 8 into the third limiting grooves of the two support seats 52, and places the guide sleeve 9 with the locking pin 10 into the positioning groove C5 of the rotating seat 12. The clamping driver 41 drives the pressing block 42 to move downward so that the pressing block 42 contacts the sliding core 8 and presses the sliding core 8 onto the support seat 52.

[0070] The first driver 16 is actuated to drive the rotating seat 12 and the guide sleeve 9 on the mounting seat to approach the limiting bracket 82 until they enter the limiting bracket 82 and are just below the first mounting hole 81. At this time, the guide sleeve 9 is in the first state; the second driver 17 is actuated to drive the rotating seat 12 and the guide sleeve 9 on the mounting seat to move upward toward the first mounting hole 81 until the upper end of the guide sleeve 9 is pressed into the first mounting hole 81. At this time, the guide sleeve 9 is in the second state.

[0071] The third driver 231 is actuated to drive the rotating shaft 21 upward through the mounting plate 51, the connecting block 32 and the pressing head, and continues to move upward to be inserted into the through hole C6 of the rotating seat 12; then, the rotating driver 232 is actuated to drive the rotating shaft 21 to rotate, and then drives the rotating seat 12 to rotate, so that the guide sleeve 9 located in the positioning groove C5 rotates a certain angle until the bayonet 91 of the guide sleeve 9 is clamped in the first mounting hole 81 of the sliding core 8.

[0072] Finally, the fourth driver 33 is actuated to drive the pressure head upward through the second mounting hole of the limit bracket 82 and inserted into the guide groove C7 at the bottom of the rotating seat 12, so that the pressing portion 311 contacts the bottom of the second pin portion 152 of the ejecting pin. As the fourth driver 33 continues to operate, the ejecting pin is driven to move upward to push the locking pin 10 to move upward, so that the upper end of the locking pin 10 is inserted into the first mounting hole 81 to fix the guide sleeve 9 to the sliding core 8. At this time, the guide sleeve 9 is in the third state.

[0073] At this point, the assembly of the guide sleeve 9 and the locking pin 10 on the sliding core 8 is completed, and then each mechanism can be reset in turn, and the worker unloads the assembled finished product.

[0074] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with this technology to understand the content of the present invention and implement it accordingly. They cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. An assembly device for a guide sleeve and a locking pin on a sliding core, characterized in that: The bottom of the sliding core is provided with a first mounting hole for installing the guide sleeve, and the bottom surface of the sliding core is also fixedly provided with a limit bracket, the limit bracket is located below the first mounting hole, and the bottom of the limit bracket has a second mounting hole; one locking pin is respectively installed at both ends of a guide sleeve; the assembly device comprises a sliding core clamping mechanism, a sliding core positioning mechanism, a guide sleeve feeding mechanism, a guide sleeve rotating mechanism and a locking pin pressing mechanism, the sliding core positioning mechanism comprises a mounting plate, the guide sleeve feeding mechanism and the locking pin pressing mechanism are both arranged on the mounting plate and are respectively located on both sides of the bottom surface of the sliding core, and the guide sleeve rotating mechanism is located below the mounting plate; The guide sleeve feeding mechanism comprises a mounting seat, a rotating seat rotatably connected to the mounting seat, a first driving component for driving the mounting seat to approach and / or move away from the limiting bracket in the horizontal direction, and a second driving component for driving the mounting seat to move up and down in the vertical direction. The rotating seat is used to place and position the guide sleeve, and a through hole is opened in the interior of the rotating seat along its height direction; the mounting seat comprises a first fixed plate and a second fixed plate connected, the second fixed plate is located at one end of the first fixed plate, and the second fixed plate is formed by two detachably connected fixed blocks, and the second fixed plate is provided with a first through groove and a second through groove connected to each other in sequence from the top surface to the bottom surface along its thickness direction; the inner wall of the second fixed plate is also spaced apart with a first limiting groove unit and a second limiting groove unit. The first limiting groove unit comprises two symmetrically arranged first limiting grooves, and the second limiting groove unit comprises two symmetrically arranged second limiting grooves. The two first limiting grooves and the two second limiting grooves are all centrally symmetrical about the center of the first through groove, the first limiting groove and the second limiting groove are both connected to the first through groove and are located on the circumference of the first through groove, the first limiting groove and the second limiting groove protrude outward from the circumference of the first through groove, the height directions of the first limiting groove and the second limiting groove are both parallel to the height direction of the first through groove, the heights of the first limiting groove and the second limiting groove are less than the height of the first through groove and the top surfaces of the first limiting groove and the second limiting groove are flush with the top surface of the first through groove, and the first limiting groove and the second limiting groove are both arc grooves; the rotating seat includes a first column, a second column, a third column, a fourth column and a fifth column connected in sequence from top to bottom, the outer wall of the third column is provided with an elastic clamping ring, the inner wall of the first through groove is in contact with the outer wall of the second column, the elastic clamping ring and the fourth column, and the inner wall of the second through groove is in contact with the outer wall of the fifth column; The guide sleeve rotating mechanism includes a rotating shaft, a rotating drive assembly for driving the rotating shaft to rotate, and a third driving assembly for driving the rotating shaft to move up and down in a vertical direction. The rotating shaft passes through the mounting plate along the thickness direction of the mounting plate. The through hole is used for the rotating shaft to pass through and the shape of the through hole is the same as that of the rotating shaft. The rotating drive assembly is used to drive the rotating shaft to rotate, thereby driving the rotating seat and the guide sleeve to rotate. The locking pin pressing mechanism includes a pressing head and a fourth driving assembly for driving the pressing head to move up and down in a vertical direction. The pressing head is located below the mounting seat and is used to press the locking pin into the first mounting hole of the sliding core to fix the guide sleeve to the sliding core.

2. The assembly device according to claim 1, characterized in that: The diameter of the first through-slot is smaller than the diameter of the second through-slot, the height of the first through-slot is greater than the height of the second through-slot, and the center of the first through-slot and the center of the second through-slot are located in the same vertical direction.

3. The assembly device according to claim 2, characterized in that: The outer diameter of the first cylinder is greater than the outer diameter of the fifth cylinder, the outer diameter of the fifth cylinder is greater than the outer diameter of the second cylinder, the outer diameter of the second cylinder is greater than the outer diameter of the third cylinder, the outer diameter of the second cylinder is equal to the outer diameter of the fourth cylinder, the thickness of the elastic collar is equal to the height of the third cylinder, and the outer diameter of the elastic collar is equal to the outer diameter of the second cylinder; The height of the fifth column is equal to the height of the second through slot, and the height of the first through slot is equal to the sum of the heights of the second column, the third column and the fourth column.

4. The assembly device according to claim 3, characterized in that: A positioning groove is provided inside the first column and runs through the height direction thereof, and the shape of the positioning groove is consistent with the outer contour of the guide sleeve, and the positioning groove is used to accommodate the guide sleeve; the through hole runs through the thickness direction of the second column and the third column, and a guide groove is provided inside the fourth column and the fifth column, and the guide groove runs through the height direction of the fourth column and the fifth column, and the positioning groove, the through hole and the guide groove are connected in sequence; the second column has two first accommodating cavities that are centrally symmetrical about the axis of the through hole formed from its outer wall inward, and the length direction of the first accommodating cavity is perpendicular to the height direction of the second column and the length of the first accommodating cavity is less than the wall thickness of the second column.

5. The assembly device according to claim 4, characterized in that: The second cylinder, the third cylinder, the fourth cylinder and the fifth cylinder are provided with two second accommodating cavities which are centrally symmetrical about the axis of the through hole. The second accommodating cavities are arranged one by one corresponding to the two locking pins on the guide sleeve. The second accommodating cavities run through the height direction of the second cylinder, the third cylinder, the fourth cylinder and the fifth cylinder. The two second accommodating cavities are respectively located on both sides of the through hole. The two second accommodating cavities are both connected with the positioning groove and the guide groove. The orthographic projections of the two second accommodating cavities on the horizontal plane are defined as the first projection plane, the orthographic projection of the positioning groove on the horizontal plane is defined as the second projection plane, the orthographic projection of the guide groove on the horizontal plane is defined as the third projection plane, and the first projection plane is located within the range of the second projection plane. A portion of the first projection surface is located within the range of the third projection surface, and the remaining portion of the first projection surface is located outside the range of the third projection surface.

6. The assembly device according to claim 5, characterized in that: An elastic member and a ball are provided in each of the first accommodating cavities, the ball abutting against one end of the elastic member, and the other end of the elastic member abutting against one end of the first accommodating cavity. When the elastic member is in a natural state, a part of the ball is located outside the first accommodating cavity, and the first limiting groove and / or the second limiting groove are used to accommodate part of the ball; a ejection pin is provided in each of the second accommodating cavities, the ejection pin comprises a first pin portion and a second pin portion connected to each other, the axis center line of the first pin portion coincides with the axis center line of the second pin portion, the diameter of the first pin portion is smaller than the diameter of the second pin portion, a notch is opened inwardly from the outer wall of the second pin portion, the height of the notch is smaller than the height of the second pin portion, and the end of the notch away from the first pin portion is flush with the end of the second pin portion away from the first pin portion; the shape of the notch is arc-shaped, and the depth of the notch is smaller than the diameter of the second pin portion.

7. The assembly device according to claim 6, characterized in that: The second accommodating cavity includes a first cavity portion and a second cavity portion that are connected. The first cavity portion is located above the second cavity portion. The diameter of the first cavity portion is smaller than the diameters of the second cavity portion and the second pin portion. The height of the second accommodating cavity is greater than the length of the second pin portion. The first cavity portion is used to accommodate at least part of the first pin portion, and the outer wall of the first pin portion is in contact with the inner wall of the first cavity portion; the second cavity portion is used to accommodate the second pin portion and part of the first pin portion, and the outer wall of the second pin portion is in contact with the inner wall of the second cavity portion.

8. The assembly device according to claim 6, characterized in that: The locking pin pressing mechanism also includes a connecting block, the pressing head includes a pressing portion and a connecting portion connected to each other, one end of the connecting block is fixedly connected to the connecting portion, the pressing portion is located below the second fixing plate, and the outer diameter of the pressing portion is smaller than the diameter of the second mounting hole and the diameter of the guide groove; a first channel is provided inside the pressing head that runs through its height direction, and a second channel is provided inside one end of the connecting block that runs through its height direction, the first channel is connected to the second channel and is used together for the rotation shaft to pass through.

9. The assembly device according to claim 7, characterized in that: The guide sleeve has a first state, a second state and a third state. When the guide sleeve is in the first state, the guide sleeve is located in the positioning groove, a part of the two balls is respectively located in one of the first limit grooves, the two locking pins are located below the bottom surface of the sliding core and the ends of the locking pins close to the ejection pins are located in the first cavity, and a side of the elastic retaining ring close to the guide sleeve is in contact with a side of the notch close to the guide sleeve; when the guide sleeve is in the second state, the end of the guide sleeve away from the pressure head is located in the first mounting hole, and the end of the guide sleeve close to the pressure head is located in the positioning groove. A portion of the ball is respectively located in one of the first limiting grooves, the two locking pins are respectively located below the bottom surface of the sliding core and the end of the locking pin close to the ejection pin is located in the first cavity, and a side of the elastic retaining ring close to the guide sleeve is in contact with a side of the notch close to the guide sleeve; when the guide sleeve is in the third state, the guide sleeve is located in the first mounting hole, a portion of the two ball is respectively located in one of the second limiting grooves, the ends of the two locking pins away from the ejection pin are located in the first mounting hole, and there is a gap between a side of the elastic retaining ring close to the guide sleeve and a side of the notch close to the guide sleeve.

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